These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Paranoia Fuel: Since swapping causes memory loss, who's to say that you haven't been swapped before? After all, you can't even remember that.
Spiritual Licensee: The Swapper has a lot in common with Vessel, in terms of it's themes about what counts as being "alive", the presentation of 2D sprites with normal mapping to give them depth, and puzzles involving having to manipulate multiple entities at once.